摘要
将陶瓷工业废弃物抛光砖粉用作一种公路工程新型的无机结合料,并将其与粉煤灰进行对比,测试了两种结合料的强度和水稳定性,采用XRD、SEM、IR等手段分析了其水化产物及微观形貌,通过化学结合水量以及化学未溶量等试验研究了抛光砖粉的火山灰活性及水化程度.结果表明:在相同配比条件下,石灰-抛光砖粉结合料与石灰-粉煤灰结合料相比,前者的早期抗压强度略有提高,28d抗压强度增幅明显,平均增幅达190%,最大增幅高达210%;前者的7d、28d软化系数均高于后者,具有更好的水稳定性.SEM测试进一步说明,石灰-抛光砖粉结合料生成的水化产物更多,结构更致密,在结构与性能上优于石灰-粉煤灰结合料.
An innovative approach of reusing ceramic polishing powder generated in ceramic industries to develop high performance inorganic binders was studied. Effects of polishing powder on pozzolanic ability and hydration degree were studied comparing to fly ash by X-ray diffraction （XRD）, infrared spectrum （IR）, scanning electron microscope （SEM） and measuring chemical combined water and chemical undissolved quantity. Results show that polishing powder has high of pozzolanic than fly ash does. Compressive strength curing 7 days of lime-polishing powder binder is slightly higher than those of lime-fly ash binder, but amplitude of strength curing 28 days is obvious high, average amplitude is up to 190% and maximal amplitude is up to 210% comparing to fly ash-lime binder. Lime-PP binder preceded lime-FA binder in intenerate index of 7 days and 28 days under the same ratio of PP （FA） to lime condition. Microstructure analysis of two binders indicated further that larger amount of hydration product is formed in lime-polishing powder binders.
出处
《陕西科技大学学报（自然科学版）》
2008年第5期10-15,共6页
Journal of Shaanxi University of Science & Technology
基金
广州市科技攻关项目(编号:2004440003110013)
关键词
无机结合料
抛光砖粉
粉煤灰
强度
水稳定性
inorganic binder
polishing powder
fly ash
strength
water stability
